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    Re: GPS & Magnetic Bearings
    From: Robert Eno
    Date: 2003 Feb 10, 09:34 +0000

    Precisely. That was part of the theory that I read about several years
    ago. The author contended that mass extinctions could have occured when
    the earth's magnetic field was at zero. He also postulated that this might
    have coincided with a nearby supernova which resulted in an additional
    cosmic ray loading on the planet, thus extinguishing a large swath of
    animals and plants.
    >If the Earth's magnetic field really goes away to nothing how does life
    >survive - I thought the theory was that it protects us from high energy
    >charged particles?
    >Charles Tait Photographic Limited, Kelton, St Ola, Orkney, UK  KW15 1TR
    >Tel 01856 873738  Fax  01856 875313  Mobile 07785 220269
    >All outgoing and incoming mail is checked by Norton Antivirus 2003
    >email  charles.tait{at}zetnet.co.uk
    >website http://www.charles-tait.co.uk
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